Rosolje is a traditional salad, as Estonian Potato Salad, where all families has their own recipe.
For sure it contains beetroot. And as says name ” rosol” (means (in Russian) cucumber brine,) salted/marinated/fermented cucumbers is very important, as well.
Usually we make this with salted /marinated herring. But I have eaten Rosolje without herring and with meat or without meat and fish, as well.
Rosolje second meaning in Estonian is mess, diverse, colorful. So, this is my recipe